package com.luoran.system.controller;

import java.io.IOException;
import java.net.URLEncoder;
import java.util.List;
import java.util.Map;
import java.util.stream.Collectors;

import cn.hutool.core.lang.tree.Tree;
import cn.hutool.core.lang.tree.TreeNodeConfig;
import cn.hutool.core.lang.tree.TreeUtil;
import com.alibaba.excel.EasyExcel;
import com.luoran.common.core.utils.PrimaryKeyIdUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.validation.annotation.Validated;
import org.springframework.web.bind.annotation.DeleteMapping;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.PathVariable;
import org.springframework.web.bind.annotation.PostMapping;
import org.springframework.web.bind.annotation.PutMapping;
import org.springframework.web.bind.annotation.RequestBody;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;
import com.luoran.common.core.constant.Constants;
import com.luoran.common.core.constant.UserConstants;
import com.luoran.common.core.utils.SecurityUtils;
import com.luoran.common.core.utils.StringUtils;
import com.luoran.common.core.web.controller.BaseController;
import com.luoran.common.core.web.domain.AjaxResult;
import com.luoran.common.log.annotation.Log;
import com.luoran.common.log.enums.BusinessType;
import com.luoran.common.security.annotation.PreAuthorize;
import com.luoran.system.domain.SysMenu;
import com.luoran.system.service.ISysMenuService;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

/**
 * 菜单信息
 *
 * @author guohailong
 */
@RestController
@RequestMapping("/menu")
public class SysMenuController extends BaseController {
    @Autowired
    private ISysMenuService menuService;



    @GetMapping("/baobiao")
    public AjaxResult getbaobiao()
    {
        List<Map<String,String>> list= menuService.getbaobiao1();

        System.out.println(list);
        return AjaxResult.success(list);
    }

    /**
     * 获取菜单列表
     */
    @PreAuthorize(hasPermi = "system:menu:list")
    @GetMapping("/list")
    public AjaxResult list(SysMenu menu) {
        Long userId = SecurityUtils.getUserId();
        List<SysMenu> menus = menuService.selectMenuList(menu, userId);
        return AjaxResult.success(menus);
    }

    /**
     * 根据菜单编号获取详细信息
     */
    @PreAuthorize(hasPermi = "system:menu:query")
    @GetMapping(value = "/{menuId}")
    public AjaxResult getInfo(@PathVariable Long menuId) {
        return AjaxResult.success(menuService.selectMenuById(menuId));
    }

    /**
     * 获取菜单下拉树列表
     */
    @GetMapping("/treeselect")
    public AjaxResult treeselect(SysMenu menu) {
        Long userId = SecurityUtils.getUserId();
        List<SysMenu> menus = menuService.selectMenuList(menu, userId);
        return AjaxResult.success(menuService.buildMenuTreeSelect(menus));
    }

    /**
     * 加载对应角色菜单列表树
     */
    @GetMapping(value = "/roleMenuTreeselect/{roleId}")
    public AjaxResult roleMenuTreeselect(@PathVariable("roleId") Long roleId) {
        Long userId = SecurityUtils.getUserId();
        List<SysMenu> menus = menuService.selectMenuList(userId);
        AjaxResult ajax = AjaxResult.success();
        ajax.put("checkedKeys", menuService.selectMenuListByRoleId(roleId));
        ajax.put("menus", menuService.buildMenuTreeSelect(menus));
        return ajax;
    }

    /**
     * 新增菜单
     */
    @PreAuthorize(hasPermi = "system:menu:add")
    @Log(title = "菜单管理", businessType = BusinessType.INSERT)
    @PostMapping
    public AjaxResult add(@Validated @RequestBody SysMenu menu) {
        if (UserConstants.NOT_UNIQUE.equals(menuService.checkMenuNameUnique(menu))) {
            return AjaxResult.error("新增菜单'" + menu.getMenuName() + "'失败，菜单名称已存在");
        } else if (UserConstants.YES_FRAME.equals(menu.getIsFrame())
                && !StringUtils.startsWithAny(menu.getPath(), Constants.HTTP, Constants.HTTPS)) {
            return AjaxResult.error("新增菜单'" + menu.getMenuName() + "'失败，地址必须以http(s)://开头");
        }
        menu.setMenuId(PrimaryKeyIdUtils.getSysIdWorker().nextId());
        menu.setCreateBy(SecurityUtils.getUsername());
        return toAjax(menuService.insertMenu(menu));
    }

    /**
     * 修改菜单
     */
    @PreAuthorize(hasPermi = "system:menu:edit")
    @Log(title = "菜单管理", businessType = BusinessType.UPDATE)
    @PutMapping
    public AjaxResult edit(@Validated @RequestBody SysMenu menu) {
        if (UserConstants.NOT_UNIQUE.equals(menuService.checkMenuNameUnique(menu))) {
            return AjaxResult.error("修改菜单'" + menu.getMenuName() + "'失败，菜单名称已存在");
        } else if (UserConstants.YES_FRAME.equals(menu.getIsFrame())
                && !StringUtils.startsWithAny(menu.getPath(), Constants.HTTP, Constants.HTTPS)) {
            return AjaxResult.error("修改菜单'" + menu.getMenuName() + "'失败，地址必须以http(s)://开头");
        } else if (menu.getMenuId().equals(menu.getParentId())) {
            return AjaxResult.error("修改菜单'" + menu.getMenuName() + "'失败，上级菜单不能选择自己");
        }
        menu.setUpdateBy(SecurityUtils.getUsername());
        return toAjax(menuService.updateMenu(menu));
    }

    /**
     * 删除菜单
     */
    @PreAuthorize(hasPermi = "system:menu:remove")
    @Log(title = "菜单管理", businessType = BusinessType.DELETE)
    @DeleteMapping("/{menuId}")
    public AjaxResult remove(@PathVariable("menuId") Long menuId) {
        if (menuService.hasChildByMenuId(menuId)) {
            return AjaxResult.error("存在子菜单,不允许删除");
        }
        if (menuService.checkMenuExistRole(menuId)) {
            return AjaxResult.error("菜单已分配,不允许删除");
        }
        return toAjax(menuService.deleteMenuById(menuId));
    }



    @PreAuthorize(hasPermi = "system:menu:getlist")
    @RequestMapping("/getlist")
    public AjaxResult getlist()
    {
        List<SysMenu> list = menuService.getlist();

//配置
        TreeNodeConfig treeNodeConfig = new TreeNodeConfig();


//转换器 (含义:找出父节点为字符串零的所有子节点, 并递归查找对应的子节点, 深度最多为 3)
        List<Tree<String>> treeNodes = TreeUtil.<SysMenu, String>build(list, "0", treeNodeConfig,
                (treeNode, tree) -> {
                    tree.setId(treeNode.getMenuId()+"");
                    tree.setParentId(treeNode.getParentId()+"");
                    tree.setName(treeNode.getMenuName());
                    tree.putExtra("path", treeNode.getPath());
                });


        System.out.println(treeNodes);

        return AjaxResult.success(treeNodes);

    }
    /**
     * 获取路由信息
     *
     * @return 路由信息
     */
    @GetMapping("getRouters")
    public AjaxResult getRouters() {
        Long userId = SecurityUtils.getUserId();
        List<SysMenu> menus = menuService.selectMenuTreeByUserId(userId);
        return AjaxResult.success(menuService.buildMenus(menus));
    }



    @PreAuthorize(hasPermi = "system:dept:list2")
    @GetMapping("/list2")
    public AjaxResult list2(SysMenu menu) {
        List<SysMenu> list = menuService.getlist2(menu);
        if ((menu.getMenuName()==null || menu.getMenuName().isEmpty()) && menu.getStatus()==null){
            List<SysMenu> collect = list.stream()
                    .filter(sysDept -> menu.getParentId() == null || menu.getParentId() == 0 || sysDept.getParentId().equals(menu.getParentId()))
                    .filter(sysDept -> menu.getMenuName() == null || menu.getMenuName().contains(sysDept.getMenuName()))
                    .filter(sysDept -> menu.getStatus() == null || menu.getStatus().equals(sysDept.getStatus()))
                    .collect(Collectors.toList());
            // 将过滤后的列表转换为树形结构
            List<SysMenu> tree = buildTree(collect);
            return AjaxResult.success(tree);
        }else {
            List<SysMenu> list2 = menuService.getlist2(menu);
            return AjaxResult.success(list2);
        }
    }

    public static List<SysMenu> buildTree(List<SysMenu> deptList) {
        // 找出根节点
        List<SysMenu> roots = deptList.stream()
                .filter(dept -> dept.getParentId() == 0)
                .collect(Collectors.toList());

        // 为每个根节点构建子树
        roots.forEach(root -> buildSubTree(root, deptList));
        return roots;
    }
    private static void buildSubTree(SysMenu parent, List<SysMenu> allDepts) {
        List<SysMenu> children = allDepts.stream()
                .filter(dept -> dept.getParentId().equals(parent.getParentId()))
                .peek(child -> buildSubTree(child, allDepts))
                .collect(Collectors.toList());

        parent.setChildren(children);
    }



    @GetMapping("download")
    public void download(HttpServletResponse response) throws IOException, IOException {
        List<SysMenu> getlist = menuService.getlist();
        // 这里注意 有同学反应使用swagger 会导致各种问题，请直接用浏览器或者用postman
        response.setContentType("application/vnd.openxmlformats-officedocument.spreadsheetml.sheet");
        response.setCharacterEncoding("utf-8");
        // 这里URLEncoder.encode可以防止中文乱码 当然和easyexcel没有关系
        String fileName = URLEncoder.encode("测试", "UTF-8").replaceAll("\\+", "%20");
        response.setHeader("Content-disposition", "attachment;filename*=utf-8''" + fileName + ".xlsx");
        EasyExcel.write(response.getOutputStream(), SysMenu.class).sheet("模板").doWrite(getlist);
    }


}
